231232012123 has 16 divisors (see below), whose sum is σ = 266461138944. Its totient is φ = 196558356960.

The previous prime is 231232012091. The next prime is 231232012133. The reversal of 231232012123 is 321210232132.

It is not a de Polignac number, because 231232012123 - 2⁵ = 231232012091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231232012094 and 231232012103.

It is not an unprimeable number, because it can be changed into a prime (231232012133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159286 + ... + 698452.

It is an arithmetic number, because the mean of its divisors is an integer number (16653821184).

Almost surely, 2^231232012123 is an apocalyptic number.

231232012123 is a deficient number, since it is larger than the sum of its proper divisors (35229126821).

231232012123 is a wasteful number, since it uses less digits than its factorization.

231232012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539682.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231232012123 its reverse (321210232132), we get a palindrome (552442244255).

The spelling of 231232012123 in words is "two hundred thirty-one billion, two hundred thirty-two million, twelve thousand, one hundred twenty-three".